Horseshoe.



N0 MODEL.

PATENTED JULY 21, 1903.

J. H. sum; HORSESHOE.

APPLIOATION IILED NOV. 13 1902.

Patented July 21, 1903.

PATENT ()FFICE.

JOHN H. STAIR, or AKRON, OHIO.

HORSESHOE.

SPECIFICATION forming part of Letters Patent No. 734,374., dated July 21, 1903.

Application filed November 13, 1902. Serial No. 131,130. (No model.)

To aZZ whom it may concermj Be it known that I, J OHN .H. STAIR, a citi zen of the United States, residing at Akron, in the county of Summit and State of Ohio,

have invented a certain new and useful Im-' provement in Horseshoes, of which the following is a specification.

My invention has relation to a detachable rubber calk for metallic horseshoes, and relates especially to the production of a calk which may be placed on a metallic shoe with-f ont skilled labor and which may be removed therefrom and renewed as often as the exi gencies of the case demand. n

Heretofore an objection has existed to horseshoes involving the use of india-rubber or elastic products on account of the fact that the shoes which contain rubber are not capable of being placed in a blacksmiths furnace to shape them to the particular hoof on which they are to be used.

The objects of my invention are to produce a detachable calk which may be removed from the shoe as sold and the metallic portion of the shoe heated and fitted to exactly the shape of the horses hoof and then the calks are capable of being placed thereon.

A further object is to produce a calk which may be used both for the toe and-heel portions of the shoe and which can be renewed as frequently as they wear out and to firmly secure it in the shoe, so that it cannot become unintentionally removed.

To the accomplishment of the aforesaid objects my invention consists in the peculiar and novel construction, arrangement, and combination of parts hereinafter described and then specifically claimed, reference being had to the accompanying drawings, forming a part of this specification.

In the accompanying drawings, in which similar reference-numerals indicate like parts in the different figures, Figure 1 is a plan View of the heel portion'of a horseshoe with my improved calk in position; Fig. 2, a similar view of a horseshoe without the calk; Fig. 3, a section at the line at of Fig. 1, and- Fig. 4 a section at the line 3 of Fig. 1. r

In the drawings, 1 is the heel portion of an ordinary horseshoe, the construction of the toe portion being immaterial to this invention and is not shown. In this heel portion the horseshoe.

of the shoe is cut a deep rectangular opening 2, from the rear end of which project two holes 3, (indicated in dotted lines in Fig. 2.) Toward the toe portionof the horseshoe, but

connected with the opening 2, is a shallower opening 4, in the bottom of which are two semicircular grooves 5, extending entirely across the bottom portion of the shallow opening 4. Between the semicircular grooves 5 is ascrew-threaded hole 6 to receive a screw similarly threaded.

The calk 8 is constructed with a lower portion of the-required size to nicely fit in the opening 2, from whence it extends upwardly a distance to be determined, and peculiarly adapted to the requirements of the particular hoof to which the shoe is to be attached.

The upper face of the calk 8 is corrugated or roughened on its upper surface, and the operator and the rear portion inserted in the opening 2 and the ends of the wires 9 inserted in the openings 3 in the rearmost part of This can easily be accomplished by reason of the yielding qualities of the rubber calk. The main or bodyportion of the calk is then pressed down and the front ends of the wires or rods 9 pressed into the grooves 5 in the shallow opening 4. A plate 10 is then placed in the shallow opening4,

whose thickness is such that when placed to rest upon the wires 9in the grooves 5 its upper surface will bejust flush with the general surface of the bottom face of the horseshoe. A screw 11 is then passed through the plate '10 and firmly secured into the opening 6 between the wires, thus elfectuallyretaining the calk in place.

It will be noticed that the front and rear portions of the rubber calk project slightly over the metal surrounding the opening 2 to make as tight a joint as possible to keep out dirt or water from the opening 2. This calk is shown as used in the heel portion of the shoe; but its use is not confined to that place alone; but it may be used with equal efficacy in the toe portion thereof. These calks are designed to be placed in position after the shoe has been cooled following the heating necessary to shape the shoe to the horses hoof, and they may be removed and replaced by similar calks at any time.

Having thus described myinvention, what I claim, and desire to secure by Letters Patent, is-

The combination in a horseshoe provided with a vertically-sided recess formed therein, said cavity being provided at one end with horizontal holes in one of the vertical walls of said cavity and having at the other end a shallower cavity connecting with said major 20 JOHN H. STAIR.

In presence of- C. E. HUMPHREY, MAUDE ZWISLER. 

